/**
 * 体力系统
 */
import { PvpDefenseModel, Heroes, OppPlayers, Robot, PvpDefenseType } from '../db/pvpDefense';
import { RoleType } from '../db/Role';
import { PVP_PLAYER_POS, PVP_HERO_POS, ROBOT_NAME } from '../consts';

import { dicPvpOpponent, DicPvpOpponent } from "../pubUtils/dictionary/DicPvpOpponent";
import { getRandomIndexByLen, genCode, getRandomByLen } from '../pubUtils/util';
import { oppPlayersInter } from '../pubUtils/interface';
import { gameData } from "../pubUtils/data";


export async function initPvpInfo(role: RoleType) {
    let heroes: Array<Heroes> = [];
    //初始化最强5人阵容
    for (let i = 0; i < role.topFive.length; i++) {
        let item = role.topFive[i];
        if (item.hid) {
            heroes.push({
                actorId: item.hid,
                hero: item.hero,
                ce: item.ce,
                dataId: PVP_HERO_POS.START + i,
                order: i + 1,
            });
        }
    }
    //初始化对手人阵容TODO
    let oppPlayers: Array<OppPlayers> = await refreshEnemies(role, 0, 1);
    
    let result = await PvpDefenseModel.createPvpDefense({ roleId: role.roleId, roleName: role.roleName, role: role._id, heroes, oppPlayers, defCe: role.topFiveCe });
    //加入排行榜 TODO
    return result;
}

export async function checkPvp(role: RoleType) {
    let result = await PvpDefenseModel.findByRoleId(role.roleId);
    if (!!result)
        return result;
    result = await initPvpInfo(role);
    return result;
}

/**
 * 返回对手三人信息
 * 
 * @param oppPlayers pvpDefense表中的oppPlayers字段，需要populate过的
 * @param pLv 玩家本人的队伍等级
 */
export function getEnemies(oppPlayers: OppPlayers[], winStreakNum: number) {
    let result = new Array<oppPlayersInter>();
    for(let {pos, isRobot, oppDef, robot} of oppPlayers) {
        let dicOpponent = dicPvpOpponent.get(pos);
        if(isRobot) {
            let { roleId, roleName, headHid, sHid, pLv, defCe  } = robot;
            result.push({
                pos, roleId, roleName, headHid, sHid, pLv, defCe,
                addScore: dicOpponent.score,
                plusScore: getPlusScore(winStreakNum)
            });
        } else {
            let opp = <PvpDefenseType>oppDef;
            let role = <RoleType>opp.role;
            let { roleId, roleName, headHid, sHid } = role;
            let { pLv, defCe } = opp;
            result.push({
                pos, roleId, roleName, headHid, sHid, pLv, defCe,
                addScore: dicOpponent.score,
                plusScore: getPlusScore(winStreakNum)
            });
        }
    }
    return result
}

// TODO 刷新对手
export async function refreshEnemies(role: RoleType, score: number, pLv: number) {
    let { roleId, topFiveCe } = role;
    let oppPlayers = new Array<OppPlayers>();
    let opp = dicPvpOpponent.values()
    for(let dicOpp of opp) {
        let flag = false; // 是否筛选成功
        if(score > 3000) { // TODO 将这个放到const
            flag = await matchPlayer(oppPlayers, roleId, pLv, dicOpp);
            // TODO 当前后分数段没有时，返回前一名的玩家
            if(!flag) flag = matchRobot(oppPlayers, topFiveCe, pLv, dicOpp);
        } else {
            flag = matchRobot(oppPlayers, topFiveCe, pLv, dicOpp);
        }
        if(!flag) continue;
    }
    
    return oppPlayers;
}

async function matchPlayer(oppPlayers: OppPlayers[], roleId: string, pLv: number, dicOpp: DicPvpOpponent ) {
    let { id: pos, minLv, maxLv } = dicOpp
    let range = await PvpDefenseModel.findByTeamLv(pLv + minLv, pLv + maxLv);
    if(range.length <= 0) return false;

    let index = getRandomIndexByLen(range.length);
    let result = range[index];
    if(!result) return false;
    if(result.roleId == roleId) {
        range.splice(index, 1);
        if(range.length <= 0) return false;
        index = getRandomIndexByLen(range.length);
        result = range[range.length];
    }
    
    oppPlayers.push({
        oppDef: result._id,
        pos,
        isRobot: false,
        robot: null
    });
    return true;
}

function matchRobot(oppPlayers: OppPlayers[], myCe: number, pLv: number, dicOpp: DicPvpOpponent) {
    let { id: pos, minLv, maxLv, ratio } = dicOpp;
    let range = gameData.pvpWar;
    if(range.length <= 0) return false;

    let index = getRandomIndexByLen(range.length);
    let result = range[index];
    if(!result) return false;

    let roleId = generateRobotRoleId();
    let roleName = getRandomByLen(ROBOT_NAME);
    let robot = new Robot(roleId, roleName, Math.floor(myCe * ratio), Math.floor(pLv + (minLv + maxLv)/2), result.war_id)
    oppPlayers.push({
        oppDef: null,
        pos,
        isRobot: true,
        robot
    });
    return true
}

// 生成机器人roleId
function generateRobotRoleId() {
    return `${genCode(10)}_r`;
}

// 根据roleId判断是不是机器人
export function checkRoleIsRobot(roleId: string) {
    return !!roleId.match(/_r/);
}

// 根据连胜次数，获得加成的积分
export function getPlusScore(win: number) {
    let result = win - 1;
    if(result > 10) result = 10;
    return result;
}